[zǐ xì]
（細心） careful; attentive
listen attentively [carefully]; lend an attentive ear to
仔細聽
observe very closely
觀察得很仔細
study carefully
仔細研究
be very careful in whatever one does
做事很仔細
When you look at the photographs, please be careful and don't smudge them.
看照片的時候仔細點兒， 別弄臟了。
She is frugal of her expenses.
她過日子很仔細。